One-off Ex­oDyne elec­tric mo­tor­cy­cle

Motorcycle Monthly - - What’s On -

Full-time vet and part-time en­gi­neer Alan Cross has cre­ated an oth­er­worldly one-off skele­tal elec­tric mo­tor­cy­cle called the Ex­oDyne.

The bike took nine months of re­search, de­sign, and fab­ri­ca­tion work to com­plete, and he did it all by him­self – ex­cept for the seat up­hol­stery and pow­der­coat­ing.

The Ex­oDyne is based around a hand-built cen­tre box frame, which holds 48 lithium poly­mer bat­tery cells ar­ranged in a 100V 32 Ah con­fig­u­ra­tion – which is ca­pa­ble of a 600 A out­put but has been re­stricted to 200 A. Lithium-ion poly­mer bat­ter­ies typ­i­cally pro­vide higher en­ergy out­puts than other lithium bat­ter­ies, while be­ing much lighter.

Power comes from an 11 kW (30 kW peak) mo­tor from En­erTrac, us­ing a Sev­con Gen 4 mo­tor con­troller, help­ing the Ex­oDyne reach a top speed of around 60mph, with a lim­ited range of 20 miles, in its cur­rent con­fig­u­ra­tion. It weighs 112kg and the mo­tor­cy­cle parts were sourced from a 2005 Suzuki RMZ250 off-roader.

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